package com.gxuwz.restaurant.config;

import com.gxuwz.restaurant.shiro.realms.CustomerRealm;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

//用来整合shiro框架相关配置类
@Configuration
public class ShiroConfig {


    //1.创建shiroFilter  ,负责拦截所有请求
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //给filter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);
          //配置系统受限资源
        Map<String,String> map = new LinkedHashMap<>();
        map.put("/user/select","anon");

        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);
       //默认认证界面路径
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");

        return shiroFilterFactoryBean;
    }

    //2.创建安全管理器
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(Realm realm){
       DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
 ///给安全管理器设置realm
        defaultWebSecurityManager.setRealm(realm);


        return defaultWebSecurityManager;
    }
    //3.创建自定义realm

    @Bean
    public Realm getRealm() {

        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为MD5
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);
        return customerRealm;

    }
    }

